Chapter 6.1, Problem 27E

To determine

To find: The percent of households that are having cards that could be hold by the garage.

Answer to Problem 27E

The percentage is 20%

Explanation of Solution

Given:

The table is:

Number	0	1	2	3	4	5
Probability	0.09	0.36	0.35	0.13	0.05	0.02

Calculation:

The percent of households that are having cards that could be hold by the garage is computed as:

  $\begin{array}{c}P\left(X>2\right)=P\left(X=3\right)+P\left(X=4\right)+P\left(X=5\right)\\ =0.13+0.05+0.02\\ =0.20\\ =20\%\end{array}$

Thus, the required percentage is 20%

Hence, the correct option is (b).